Roller-skate



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(NoMoael.) W. H. DANIEL.

Y Y ROLLER SKATE. l 1\I0.35z,739.V PatentedNo-v. 16,1886,

' had to the accompanying drawings, in which-V x-UNITED WILLIAM H. DANIEL, or CHICAGO, ILLINOIS. f

ROLLER-SKATE.

SPECIFICATION forming part of Letters Patent No. 352,739, aneeivovemb'e: 16,1886.' if

Application lcd November 1'7, 1884. Serial No. 148,151. (No model.)

.To all whom, it may concern:

Be it known that I, WILLIAM HQDANIEL,

residing'at Chicago, in the county of Cook and State of Illinois, and a citizen of the United 1 States, have invented a newand useful Improvement in Roller-Skates, of which the following is a full description, reference being Figure l is aside elevationl with the bearing of one of the wheels removed to show thel anti-friction balls, Fig. 2, an elevation showing the axle with one wheely removed to show. the bearings for the anti-friction balls; Fig. 3, a section through one of the wheels, showing the anti-,friction balls in position; Fig. 4, a detail showing the bearing end of one of the hub-boxes; Fig. 5, a detail `of the lockingwasher; Fig. 6, a detail showing the outer end of the wedge-bearing. f

The object of this invention is to constructaroller-skate which will be easy and light running in use by removing the friction between the wheel and axle and between the wheelhnbs and the washers or nuts, so that the wheel will have a bearing independent of v the axle in both a vertical and lateral direction; and this kobject is accomplished in the manner and by the means hereinafter'described, and pointed out in the claims.

ln the drawings, y A represents the wheels of a roller-skate-four wheels being used, one set at the front and one set at the rear, as

usual-and the wheels .are made ofwood orni other suitable material.

B represents boxes or linings for the hubs of the wheels, two`of such boxes or linings be! ing dused in each wheel, and being inserted from each end in an Aopening in the wheeh hub, and the exterior end face of each boxy is` cut out so as to form a concave depression, b, and, as shown, the exterior periphery of each box is provided with a locking and limit l flange, b', which rests against the' side of the hole, b, of a larger'diameter than the diame lter of the axle with which.the wheel is to be used, as shown in Fig. 3. These boxes, asv

box at its center is provided with al circulary shown, do not fill thev entire length of the hub i in the form of construction shown; but they might be of such length, if desired, as to entirely fill the hub lengthwise.

wheels, one being provided for each wheel, and each consistingof a -plate or circular portion with an inward extension having a con-` cave surface or face, c, corresponding'to the face or surface b whenthe bearing C is in position, and these concave surfaces or faces be p form an opening in/ which is located a suffif 6o C represents the outer bearings'for' the bearings for the or face c, to coact with the surface or face b of I the inner hub-box, to form a space in whichis located a series of balls, a, corresponding 'to `and a nut, e, by means offwhichand a lock- 8o those for the outer bearing. The recesses ,formed by the concave surfaces or faces b c and;v

the concave facesfor surfaces b on each side of: the wheel, and inv which are located the bear-' v washer, e', the outer bearing, C,is held against,

end movement outwardly.- 'The washer has a square face on one side, and the end of the axle has a corresponding face, so that when the washer is slipped onto the axle end the square faces furnish a lock against the turning of the washer, and, as shown, the washer e lies in a recessformed on the exterior end of the bearing C.

F represents the hanger-frame, attached to the foot-plate E of the skate and to axle, either by driving the axle therein, or in any other IOO wheel can then be slipped onto its axle end,

balls outward and in contact with the surface the bearings for the wheels, and at the same D removes the bearing for the wheel from the A boxes B and bearings C D, furnishes a bearing suitable and rm manner, andwhenlin place the ends of the frame form a backing for-the inner bearings, D, in the form of construction shown. v The axle E is driven or otherwise secured into the frame F, so as to be firm therewith and not` capable of revolvin g. IIhe inner bearings, D, are screwed onto the opposite ends of the axles until they abut against the ends of the frame. The balls for the inner bearings are placed in the cavity of the inner box, B, resting onethe surface-or face 5 to do vwhich a. round piece is slipped through the opening in the box to form a stop, and prevent the balls from dropping through the axle-opening b", which piece can be withdrawn, leaving the balls resting on the surface or face b, and the bringing the balls in contact with the surface or face d of the bearing, and as this surface or face is tapering it acts as a wedge, forcing the or face d. The balls a are then droppedinto the cavity of the outer box resting onthe surface or face b t-hereof, and the bearing C is screwed onto the axle, bringing the surface or face c in contact with the balls, and as lthis surface or face is also conical it forces the balls outward in the same manner and for the same purpose as does the face d. The washer e' is then dropped into place and the nut e screwed down, locking the bearing C against end 'movement, and as the bearing O can be moved in or out by reason of the screw-threads, it will be seen that this bearing acts to adjust the bearingfaces b d and b c in proper relation to each other and to the balls a, to have the balls form time have them run with sufficient looseness` for the wheel to turn readily and easily.

The bearing furnished by the balls a and the bearing-surfaces of the box B and bearings C axle and puts it on the balls, and as these balls have each an independent rolling movement, it will be seen that the bearing-surface presented is very small, and consequently but little, if any, friction will take place, and as the balls also bear laterally as well as vertically, it will be seen that the side friction, if any, will also be very slight in degree.

The use of bearing-balls, combined with the of such nature that if the skater leans to the right or left no appreciable increase in the frictional surfaces will be had, as the balls only i presenta small bearing-surface, no matter in what direction the pressure may come, and by using such ball-bearings the friction heretofore occurring in rollerskates, where the operator leanseither to the right or left, bringing the wheel-hublin contact with the end washers or other holding device, will be entirely overcome, and at the Sametime the direct bearing on the axle heretofore had in rollerskates is entirely removed.

The balls present a movable bearing, against which the wheel runs, instead of comin gin contact with a fixed surface or bearing, as rollerskates have been heretofore constructed, by which means, as the balls always move in the direction in which the Wheel is impelled, the wheel will not have to overcome the inertia of an axle, which, if it revolves at all, would only do so when the friction of the wheels on the axle became greater than that between the axle-bearing or the box andaxle.

I am Well aware that anti'friction balls have been used in journal-bearings, and in one instance known to me such balls have been placed in square recesses of a revolving wheel, and retained in place by a fixed conical collar on the journal, and a conical washer, which is adjusted by a nut'for taking up the wear of the balls or lost motion. My invention differs from the above, since I use roller seats or recesses of a special form, whereby concave faces or supports for the rollers arc formed, and ay bearing is produced iin which the thrust is received in all directions, as has already been explained.

What I claim asnew, and desire to secure by Letters Patent, is as follows:

1. The hub B, made in two parts, having the locking and limit flanges b', and the verticallyconcave surface b, in combinationwith the end plates, G D, having concave grooves, substantially as shown and described, whereby the ac tion of the balls tends to crowd the locking flanges against the roller A, as set forth.

2. In combinationv with a foot plate of a 'roller-skate, its hanger and supporting-axle,

a hub, B, made in two parts, having locking and limit flanges b', the vertical1yconcave su rface b, and the end plates, C D, having con#` 10,5`

cave grooves, substantially as shown and described, for the purposes set forth.

WILLIAM H. DANIEL.

Witnesses:

- ALBERT` H. ADAMS,

O. W. BOND.

i oo, 

